PWM呼吸灯：

pwm.h:

#ifndef __PWM_H
#define __PWM_Hvoid PWM_Init(void);
void PWM_SetCompare1(uint16_t Compare);#endif

pwm.c:

#include "stm32f10x.h"                  // Device headervoid PWM_Init(void)
{RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);GPIO_InitTypeDef GPIO_InitStructure;//为了让PWM和GPIO联合起来GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStructure);TIM_InternalClockConfig(TIM2);TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;TIM_TimeBaseInitStructure.TIM_Period = 100 - 1;		//ARRTIM_TimeBaseInitStructure.TIM_Prescaler = 720 - 1;		//PSCTIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);TIM_OCInitTypeDef TIM_OCInitStructure;TIM_OCStructInit(&TIM_OCInitStructure);TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;TIM_OCInitStructure.TIM_Pulse = 0;		//CCRTIM_OC1Init(TIM2, &TIM_OCInitStructure);TIM_Cmd(TIM2, ENABLE);
}void PWM_SetCompare1(uint16_t Compare)
{TIM_SetCompare1(TIM2, Compare);
}

main.c:

#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "PWM.h"uint8_t i;int main(void)
{OLED_Init();PWM_Init();while (1){for (i = 0; i <= 100; i++){PWM_SetCompare1(i);Delay_ms(10);}for (i = 0; i <= 100; i++){PWM_SetCompare1(100 - i);Delay_ms(10);}}
}

PWM舵机：

Servo.h:

#ifndef __SERVO_H
#define __SERVO_Hvoid Servo_Init(void);
void Servo_SetAngle(float Angle);#endif

Servo.c:

#include "stm32f10x.h"                  // Device header
#include "PWM.h"void Servo_Init(void)
{PWM_Init();
}void Servo_SetAngle(float Angle)
{PWM_SetCompare2(Angle / 180 * 2000 + 500);
}

Key.c:

#include "stm32f10x.h"                  // Device header
#include "Delay.h"void Key_Init(void)
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_11;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOB, &GPIO_InitStructure);
}uint8_t Key_GetNum(void)
{uint8_t KeyNum = 0;if (GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_1) == 0){Delay_ms(20);while (GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_1) == 0);Delay_ms(20);KeyNum = 1;}if (GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_11) == 0){Delay_ms(20);while (GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_11) == 0);Delay_ms(20);KeyNum = 2;}return KeyNum;
}

main:

#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "Servo.h"
#include "Key.h"uint8_t KeyNum;
float Angle;int main(void)
{OLED_Init();Servo_Init();Key_Init();OLED_ShowString(1, 1, "Angle:");while (1){KeyNum = Key_GetNum();if (KeyNum == 1){Angle += 30;if (Angle > 180){Angle = 0;}}Servo_SetAngle(Angle);OLED_ShowNum(1, 7, Angle, 3);}
}

江科大的